package string;

import java.util.Locale;

public class Upp {
    public static void main(String[] args) {
        String str = "a,b,c,D,e,F,g";
        String str1 = str.toUpperCase();
        System.out.println(str1);

        String str2 = str.toLowerCase();
        System.out.println(str2);
    }
}
